Forum > Birds In The News > Reed Warblers Have A Sense For Magnetic Declination

Webmaster Posted 17-Aug-2017 12:21
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From Science Daily and Guardian on 17-Aug-2017 12:21

Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map to guide them on their long-distance journeys. But it wasn't clear how the birds were solving the difficult 'longitude problem,' determining where they were along the east-west axis and which way to go. The team's latest report shows birds rely on changes from east to west in magnetic declination, the angular difference between geographic north and magnetic north.


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